A synchronization method between a reader and a tag are provided to accurately perform the synchronization between a reader and a tag based on the calculation of both clock offset and message delay between the reader and the tag. A reader transmits a first write instruction message to a tag at first time(111), and the tag detects the first write instruction message from the reader at a second time. The tag transmits a first response message corresponding to the first write instruction message to the reader(112), and the reader the second write instruction message including time information for the first time to the tag(113). The tag corrects clock offset by using the difference between the first and second times.
申请公布号
KR20090065482(A)
申请公布日期
2009.06.22
申请号
KR20090017908
申请日期
2009.03.03
申请人
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE
发明人
KIM, HYUN SEOK;CHOI, SU NA;LEE, HEYUNG SUB;SEONG, NAK SEON;PYO, CHEOL SIG;CHAE, JONG SUK